Home / 828,016.30-1,242,024.45-820,143.10

Finding the Fourth Proportional to 828,016.30, 1,242,024.45 and 820,143.10

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Solution

The fourth proportional to 828,016.30, 1,242,024.45 and 820,143.10 is: 1,230,214.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,016.30 : 1,242,024.45 = 820,143.10 : x
  2. Step 2: Convert to fraction form
    828,016.30/1,242,024.45 = 820,143.10/x
  3. Step 3: Cross multiply
    828,016.30x = 1,242,024.45 × 820,143.10
  4. Step 4: Simplify right side
    828,016.30x = 1,018,637,782,698.80
  5. Step 5: Solve for x
    x = 1,018,637,782,698.80/828,016.30
  6. Step 6: Final answer
    x = 1,230,214.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.